Texture rendering looks different from preview
I almost give it up :)

You have set body material in View Layer Properties &gt; Override - you have to disable it.

Second thing is your UVMap - rotated 90 deg. = squized image.
If you would like to fix it, it would be such painful unwrap each feather so I would suggest just to rotate original images to landscape orintation.

Third thing is - &quot;someone&quot; wanted paint feather to brown and destroyed alpha channels. I saw some separated alphas (masks) packed in your file, so you would probably use them instead original ones.
Funny, with all these errors, it is looking cool in Worbench engine :)

Note to Normals direction - if you will have some shading issue in render,
select all faces and press Shift+N.

Nice flight, your forensic team from future, in hope message will be delivered on time :)